Automotive ICs

Automotive, 105°C Operation, 6.5 V Input, 1000 mA Voltage Regulator with Soft-start Function S-19254xxxH Series

The S-19254xxxH Series developed by using high-withstand voltage CMOS process technology, is a positive voltage regulator with high-accuracy output voltage and high output current.
A built-in overcurrent protection circuit to limit overcurrent of the output transistor and a built-in thermal shutdown circuit to limit heat are included. Also, the S-19254xxxH Series includes the soft-start function to adjust the output voltage rising time at power-on or at the time when the ON / OFF pin is set to ON.

Thermal simulation service
ABLIC Inc. offers a “thermal simulation service” which supports the thermal design in conditions when our power management ICs are in use by customers. Our thermal simulation service will contribute to reducing the risk in the thermal design at customers development stage.
For more information regarding our thermal simulation service, contact our sales representatives.

FIT rate calculation
ABLIC Inc. offers FIT rate calculated based on actual customer usage conditions in order to support customer functional safety design.
For more information regarding our FIT rate calculation, contact our sales representatives.

Caution: This product can be used in vehicle equipment and in-vehicle equipment. Before using the product for these purposes, it is imperative to contact our sales representatives.


Output voltage
1.0 V to 5.5 V, selectable in 0.05 V step
Input voltage
2.5 V to 6.5 V
Output voltage accuracy
±3.0% (Tj = −40°C to +105°C)
Dropout voltage
0.38 V typ. (2.6 V output product, at Iout = 1000 mA)
Current consumption
During operation: 120 μA typ., 150 μA max. (Tj = −40°C to +105°C)
During power-off: 0.1 μA typ., 4.5 μA max. (Tj = −40°C to +105°C)
Output current
Possible to output 1000 mA (at Vin ≥ VOUT(S) + 1.0 V)*1
Ripple rejection
60 dB typ. (at f = 1.0 kHz)
Built-in overcurrent protection circuit
Limits overcurrent of output transistor.
Built-in thermal shutdown circuit
Detection temperature 170°C typ.
Built-in soft-start circuit
Adjusts output voltage rising time at power-on or at the time when ON / OFF pin is set to ON.
  Adjustable type: tss = 6.0 ms typ. (Css = 10 nF)
             Soft-start time can be changed by the capacitor (Css).
Built-in ON / OFF circuit
Ensures long battery life.
Discharge shunt function is available.
Pull-down function is available.
Operation temperature range
Ta = −40°C to +105°C
Lead-free (Sn 100%), halogen-free
AEC-Q 100 qualified*2

*1. Please make sure that the loss of the IC will not exceed the power dissipation when the output current is large.
*2. Contact our sales representatives for details.


  • Constant-voltage power supply for electrical application for vehicle interior
  • Constant-voltage power supply for home electric appliance
  • For automotive use (accessory, car navigation system, car audio system, etc.)

Parts List

  • U(Ux), S and G at the end of the product name of ABLIC Inc. were used to indicate different material specifications as “environmental code”,
    however, these have now been unified into “lead-free and halogen-free” and are identical in terms of environmental quality.
  • Note: Lead-free plating other than 100% Sn is applied to some limited old products, therefore, please contact our sales representatives for details.
  • These descriptions may be different from the actual product name and parameter.
    Please confirm the product name and specifications with the data sheet again.
  • The information herein is subject to change without notice.